3/16 x 1/2 x 49/250 Revolution (0.187 x 0.500 x 0.196")

£0.90

The Revolution Series bearings are a low friction bearing with several options to help satisfy anyone's desire. What makes this bearing unique is that it has a rubber seal on one side while having a metal shield on the other. Rubber seals are great protectors against dirt but the price is that they offer a little more friction due to the tighter seal.

3/16x1/2x49/250 Revolution Halo bearing by Avid Racing Concepts is a popular bearing for Associated B4.1, B44.1, T4.1, and GT2 rear hubs and also used in common router applications.
Bearing Dimensions